Apinger Latency/Delay warning on speedtest

AhnHEL

I've noticed the following while running a speedtest on Speedtest.net and was looking for some kind of confirmation that it is something specific to my setup and/or ISP.

Running latest Full version snap of 2.0 Beta 1 on a home built PC. Intel Dual Core (1.8 Ghz), 2GB RAM, CF to IDE adapter using a 4GB Industrial CF, Intel Dual Port Pro/1000 MT NIC serving WAN and LAN.

While running the speedtest, the ping test and download test goes fine, i get a latency of 7-9ms on the website, and the Gateway Widget shows a 9-12ms RTT. I'm getting full wire speed of my ISP's connection of 10Down/.5 Up

The problem is the Upload test. Once the Upload starts, System logs shows a 'apinger WAN delay' and the Gateway Widget shows a RTT of 450-650ms. Like I said above, I'm still getting my ISP's maximum speed.

I've attached pictures to show the problem during the Speedtest's Upload part. Can anyone confirm if this is an issue that applies to pfSense or is it just my connection?

Thanks in advance.
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_igor_

I did the same test, but nothing in logs. So I cannot confirm that from my side.
But what I can see is, that pfsense has a great performance! I'm so glad to have found pfsense!

wallabybob

I don't know the details of how the speedtest works but expect that for the upload test it will be queueing up a fair bit of data to maximise the throughput. Consequently other things like apinger will just have to take their place in the transmit queue behind the speedtest data and so will encounter longer delays than they would see on a very nearly idle upload link.

I believe there are pfSense mechanisms to give priority to various types of traffic. Unless you have invoked them I'd say what you have observed is "to be expected".

A second factor on the delay variations is that your download speed is 20 times your upload speed. IF speedtest queues a fixed amount of data the transmission time for the download of that data will be one twentieth the transmission time for the upload, so the queueing will be more noticeable for the upload than the download.

cmb

Exactly what wallabybob said, that's how things should work. When you're pegging your connection, those pings will be queued (by your modem with cable or DSL) and will have considerably higher delay, especially on the upload side. Not a problem at all with anything, it's just how networks work.

AhnHEL

Thanks to you both for the clarification.